Unpublished (Discussion Papers, Latest Researches, and others) :

• ``Social Recognition and Economic Equilibrium," Discussion paper 06-30, Graduate School of Economics and Osaka School of International Public and Policy, Osaka University, 2006.

• Fixed Points and Economic Equilibria, Ph.D. Thesis, Osaka University, December, 2005.

• ``Existence of equilibrium with non-convex constraint correspondences: Including an application for the default economy,'' with Akihiko YOSHIMACHI, Discussion paper 02-06, Graduate School of Economics and Osaka School of International Public and Policy, Osaka University, 2002.

  Latest Version ``Fixed points and social equilibrium existence without convexity conditions: Including an application for the default economy'' --- Dounload UYnoncoC.ps (269kb), UYnoncoC.pdf (217kb)

• ``Why there isn't a complete description of the human society II: The society and value,'' Discussion paper 02-05, Graduate School of Economics and Osaka School of International Public and Policy, Osaka University, 2002.

  Latest Version ``Why the society and social values cannot be completely described as well defined mechanisms'' --- Dounload the2nd01.pdf (189kb)

• ``Why there isn't a complete description of the human society: The rationality and individuals,'' Discussion paper 02-04, Graduate School of Economics and Osaka School of International Public and Policy, Osaka University, 2002.

  Latest Version --- Dounload the1st03.ps (264kb), the1st03.pdf (207kb)

• ``A Game Theoretic Characterization of Monetary Equilibria in Perfect Foresight Double Infinity Economies,'' Discussion Paper 95-09, Faculty of Economics and Osaka School of International Public Policy, Osaka University, 1995.

• ``On the economic theory of fertility,'' with Kiyoshi KUGA, Discussion paper No. 192, The Institute of Social and Economic Research, Osaka University, 1989.

• ``The Overlapping Generations Model: Optimality of Competitive Equilibrium and Role of Money,'' (Japanese), Master theses, Graduate School of Economics, Osaka University, 1987.

Published Papers (International Journals)

• ``Fixed point theorems in Hausdorff topological vector spaces and economic equilibrium theory", with Akihiko Yoshimachi, Advances in Mathematical Economics, vol.6, (2004), 149--165. ---(Theorem reference number corrected Version is here.)

• ``A generalization of continuity and convexity conditions for correspondences in the economic equilibrium theory", with Takashi Hayashi, The Japanese Economic Review, Vol. 51, No. 4, (December 2000).

• ``Fixed point theorems and the existence of economic equilibria based on conditions for local directions of mappings", Advances in Mathematical Economics, vol. 2, (2000), 87--118, (Springer-Verlag).

• ``On the Existence of Equilibria in Economies with Infinitely Many Agents and Commodities: The Direct System of Economies", Journal of Mathematical Economics, Vol. 23, (1994), 339--359.

• ``Direct System of Economies with Inverse System of Price Spaces", The Economic Studies Quarterly, Vol. 43, No. 2, (June 1992), 154-164.

• ``On the Existence of Pareto-Optima and Interest Competitive Equilibria in the Generation-Overlapping Exchange Economy", The Economic Studies Quarterly, Vol. 41, No. 3, (September 1990), 235-246.

Published Papers (University Jounals) :

• 『線型位相空間における双対系構造の一般化と 多価写像の不動点定理』, with 横田耕介, 大阪大学経済学 56 巻 3 号, 1--12, 2006.

• ``Homological Methods for the Economic Equilibrium Existence Problem: Coincidence Theorem and an Analogue of {S}perner's Lemma in {N}ikaido (1959)", in Kokyuroku 1488, Research Institute for Mathematical Sciences, Kyoto University, May, 2006.

• ``General Equilibrium Theory for Economy with Asymmetric Information: Basic Model", in Kokyuroku, Research Institute for Mathematical Sciences, Kyoto University, July, 2005.

• ``Generalized dual system structure and fixed point theorems for multi-valued mappings", with Kousuke Yokota, in Kokyuroku, Research Institute for Mathematical Sciences, Kyoto University, July, 2005.

• 『非対称情報経済のための一つの一般均衡モデル』, with 吉町昭彦, 大阪大学経済学 54 巻 2 号, 13--19, 2004.

• 『債務不履行を考慮に入れた経済において 均衡の存在を保証する条件としての道徳性』, with 吉町昭彦, 大阪大学経済学 54 巻 2 号, 1--12, 2004.

• ``Why there isn't a complete description of the human society I: The individual and rationality", in Kokyuroku, Research Institute for Mathematical Sciences, Kyoto University, no.1264, 2002.

• ``On the Existence of Pareto-optima in Overlapping Generations Economies with Production,'' KSU Economic and Buisiness Review, (Kyoto Sangyo University), No.22, (May 1995), 113--126.

• ``A Non-Existence Theorem of Paret-Optima in Economies with an Infinity of Agents,'' KSU Economic and Buisiness Review, (Kyoto Sangyo University), No. 21, (May 1994), 127--131.

• ``On the Generalized Price Simplex and the Boundary Condition,'' The Economic and Buisiness Administration Review, (Kyoto Sangyo University), Vol. 28, No. 2, (September 1993), 42--53.

• ``The Echelon Construction Scheme with Functors", The Economic and Buisiness Administration Review, (Kyoto Sangyo University), Vol. 28, No. 1, (June 1993), 151--160.

• ``An Extension of Gale-Nikaido-Debreu Lemma to the Case with Infinitely Many Excess Demand Correspondences", KSU Economic and Buisiness Review, (Kyoto Sangyo University), No. 20, (May 1993), 17--26.

• ``Monetary equilibrium and Independancy of Asset Markets,'' (Japanese), Keizai Keiei Ronso (Kyoto Sangyo University, Kyoto, Japan), Vol. 26, No. 2, (September 1991), 52--66.

• ``On the Existence of Pareto-Optima in Topological Vector Spaces without Complete Preferences", KSU Economic and Buisiness Review, (Kyoto Sangyo University), No. 18, (May 1991), 61--64.

Copyright © 1999-2002 Ken Urai